Since the start of the year, the Russian state-backed ColdRiver hacking group has been using new LostKeys malware to steal files in espionage attacks targeting Western governments, journalists, think tanks, and non-governmental organizations. [...]

SonicWall has urged its customers to patch three security vulnerabilities affecting its Secure Mobile Access (SMA) appliances, one of them tagged as exploited in attacks [...]

The Play ransomware gang has exploited a high-severity Windows Common Log File System flaw in zero-day attacks to gain SYSTEM privileges and deploy malware on compromised systems. [...]

CISA warned critical infrastructure organizations of "unsophisticated" threat actors actively targeting the U.S. oil and natural gas sectors. [...]

​Polish authorities have detained four suspects linked to six DDoS-for-hire platforms, believed to have facilitated thousands of attacks targeting schools, government services, businesses, and gaming platforms worldwide since 2022. [...]

Microsoft says the April 2025 security updates are causing authentication issues on some Windows Server 2025 domain controllers. [...]

The Legal Aid Agency (LAA), an executive agency of the UK's Ministry of Justice that oversees billions in legal funding, warned law firms of a security incident and said the attackers might have accessed financial information. [...]

Microsoft is investigating a new Microsoft 365 outage affecting multiple services across North America, including the company's Teams collaboration platform. [...]

Today, Microsoft announced new Windows experiences for Copilot+ PCs, including AI agents that will make changing settings on your Windows computer easier. [...]

​Microsoft has fixed a known issue preventing Windows 11 24H2 feature updates from being delivered via Windows Server Update Services (WSUS) after installing the April 2025 security updates. [...]

TeleMessage, an Israeli company that sells an unofficial Signal message archiving tool used by some U.S. government officials, has suspended all services after reportedly being hacked. [...]

The Skype video call and messaging service is shutting down today, 14 years after replacing Microsoft's Windows Live Messenger. [...]

Microsoft has silently fixed an issue that broke Start Menu jump lists for all apps on systems running Windows 10, version 22H2. [...]

​Microsoft announced over the weekend that the Windows 11 24H2 update is ready to roll out to all compatible PCs, excluding those with safeguard holds. [...]

The United Kingdom's National Cyber Security Centre warned that ongoing cyberattacks impacting multiple UK retail chains should be taken as a "wake-up call." [...]

The Irish Data Protection Commission (DPC) has fined TikTok €530 million (over $601 million) for illegally transferring the personal data of users in the European Economic Area (EEA) to China, violating the European Union's GDPR data protection regulations. [...]

​Microsoft has resolved an issue with a machine learning model that mistakenly flagged emails from Gmail accounts as spam in Exchange Online. [...]

Microsoft has announced that all new Microsoft accounts will be "passwordless by default" to secure them against password attacks such as phishing, brute force, and credential stuffing. [...]

Cybersecurity company SonicWall has warned customers that several vulnerabilities impacting its Secure Mobile Access (SMA) appliances are now being actively exploited in attacks. [...]